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fmtconvert_init.c
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1 /*
2  * Format Conversion Utils
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 #include "libavutil/attributes.h"
26 #include "libavutil/cpu.h"
27 #include "libavutil/x86/asm.h"
28 #include "libavutil/x86/cpu.h"
29 #include "libavcodec/fmtconvert.h"
30 
31 #if HAVE_YASM
32 
33 void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
34 void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
35 void ff_int32_to_float_fmul_array8_sse (FmtConvertContext *c, float *dst, const int32_t *src,
36  const float *mul, int len);
37 void ff_int32_to_float_fmul_array8_sse2(FmtConvertContext *c, float *dst, const int32_t *src,
38  const float *mul, int len);
39 
40 void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
41 void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
42 void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
43 
44 void ff_float_to_int16_step_3dnow(int16_t *dst, const float *src, long len, long step);
45 void ff_float_to_int16_step_sse (int16_t *dst, const float *src, long len, long step);
46 void ff_float_to_int16_step_sse2 (int16_t *dst, const float *src, long len, long step);
47 
48 void ff_float_to_int16_interleave2_3dnow(int16_t *dst, const float **src, long len);
49 void ff_float_to_int16_interleave2_sse (int16_t *dst, const float **src, long len);
50 void ff_float_to_int16_interleave2_sse2 (int16_t *dst, const float **src, long len);
51 
52 void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
53 void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
54 void ff_float_to_int16_interleave6_3dnowext(int16_t *dst, const float **src, int len);
55 
56 #define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
57 
58 #define FLOAT_TO_INT16_INTERLEAVE(cpu) \
59 /* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
60 static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
61  int c;\
62  for(c=0; c<channels; c++){\
63  ff_float_to_int16_step_##cpu(dst+c, src[c], len, channels);\
64  }\
65 }\
66 \
67 static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
68  if(channels==1)\
69  ff_float_to_int16_##cpu(dst, src[0], len);\
70  else if(channels==2){\
71  ff_float_to_int16_interleave2_##cpu(dst, src, len);\
72  }else if(channels==6){\
73  ff_float_to_int16_interleave6_##cpu(dst, src, len);\
74  }else\
75  float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
76 }
77 
78 FLOAT_TO_INT16_INTERLEAVE(3dnow)
79 FLOAT_TO_INT16_INTERLEAVE(sse)
80 FLOAT_TO_INT16_INTERLEAVE(sse2)
81 
82 static void float_to_int16_interleave_3dnowext(int16_t *dst, const float **src,
83  long len, int channels)
84 {
85  if(channels==6)
86  ff_float_to_int16_interleave6_3dnowext(dst, src, len);
87  else
88  float_to_int16_interleave_3dnow(dst, src, len, channels);
89 }
90 
91 void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
92 void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
93 
94 void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
95 void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
96 
97 static void float_interleave_mmx(float *dst, const float **src,
98  unsigned int len, int channels)
99 {
100  if (channels == 2) {
101  ff_float_interleave2_mmx(dst, src, len);
102  } else if (channels == 6)
103  ff_float_interleave6_mmx(dst, src, len);
104  else
105  ff_float_interleave_c(dst, src, len, channels);
106 }
107 
108 static void float_interleave_sse(float *dst, const float **src,
109  unsigned int len, int channels)
110 {
111  if (channels == 2) {
112  ff_float_interleave2_sse(dst, src, len);
113  } else if (channels == 6)
114  ff_float_interleave6_sse(dst, src, len);
115  else
116  ff_float_interleave_c(dst, src, len, channels);
117 }
118 #endif /* HAVE_YASM */
119 
120 av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
121 {
122 #if HAVE_YASM
123  int cpu_flags = av_get_cpu_flags();
124 
125  if (EXTERNAL_MMX(cpu_flags)) {
126  c->float_interleave = float_interleave_mmx;
127  }
128  if (EXTERNAL_AMD3DNOW(cpu_flags)) {
129  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
130  c->float_to_int16 = ff_float_to_int16_3dnow;
131  c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
132  }
133  }
134  if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
135  if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
136  c->float_to_int16_interleave = float_to_int16_interleave_3dnowext;
137  }
138  }
139  if (EXTERNAL_SSE(cpu_flags)) {
140  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
141  c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
142  c->float_to_int16 = ff_float_to_int16_sse;
143  c->float_to_int16_interleave = float_to_int16_interleave_sse;
144  c->float_interleave = float_interleave_sse;
145  }
146  if (EXTERNAL_SSE2(cpu_flags)) {
147  c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
148  c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;
149  c->float_to_int16 = ff_float_to_int16_sse2;
150  c->float_to_int16_interleave = float_to_int16_interleave_sse2;
151  }
152 #endif /* HAVE_YASM */
153 }
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